Category: Hardware
Product Number: AD9082
Dear,
We have an AD9082 FMCA EBZ evaluation board driven by a Xilinx ZCU102 FPGA board.
I tried to modify the HDL reference and the petalinux device tree to get the DAC/ADC working at 9.6GHz/4.8GHz, decimation of 4 and interpolation of 8.
I used MxFE JESD204x Mode Selector Tool to identify the JESD modes and decimation and interpolation. Here are the modes:
- TX: JESD Mode Number 17 txBW 960.0 Total Int 8 Coarse Int 8 Fine Int 1 Dual Link False JESD Deframer JESD204B L 8 M 4 F 1 S 1 K 32 N 16 NP 16 LaneRate 12.0
- RX: JESD Mode Number 18 rxBW 976.8 Total Dec 4 Coarse Dec 4 Fine Dec 1 Dual Link False JESD Framer JESD204B Async False L 8 M 4 F 1 S 1 K 32 NP 16 LaneRate 12.0
The HDL reference design is generated by the command below.
make JESD_MODE=8B10B
RX_LANE_RATE=12\
TX_LANE_RATE=12\
RX_JESD_M=4 \
RX_JESD_L=8 \
RX_JESD_S=1 \
RX_JESD_NP=16 \
TX_JESD_M=4 \
TX_JESD_L=8 \
TX_JESD_S=1 \
TX_JESD_NP=16
However, when the Petaliunx boots up I get the following error multiple times and the ADC doesn't work.
[ 12.514189] axi_adxcvr 84a60000.axi-adxcvr-rx: adxcvr_clk_enable: QPLL RX buffer underflow error, status: 0x61
[ 12.524180] axi_adxcvr 84a60000.axi-adxcvr-rx: adxcvr_clk_enable: QPLL RX buffer overflow error, status: 0x61
I would be grateful if you help me to resolve this issue.
Below, you can see the whole modified device tree, where I configured the DEV_REFCLK= 200MHz, DEV_SYSREF = FPGA_SYSREF= 1,171,875 Hz, CORE_CLK_Tx = CORE_CLK_RX = FPGA_REFCLK1 = FPGA_REFCLK2 = 300MHz.
#include "zynqmp-zcu102-rev10-ad9081.dts"
&axi_ad9081_adxcvr_rx {
adi,sys-clk-select = <XCVR_QPLL>;
//adi,out-clk-select = <XCVR_REFCLK_DIV2>;
adi,out-clk-select = <XCVR_REFCLK>;
};
&axi_ad9081_adxcvr_tx {
adi,sys-clk-select = <XCVR_QPLL>;
//adi,out-clk-select = <XCVR_REFCLK_DIV2>;
adi,out-clk-select = <XCVR_REFCLK>;
};
/delete-node/ &ad9081_dac2;
/delete-node/ &ad9081_dac3;
&spi1 {
status = "okay";
hmc7044: hmc7044@0 {
#address-cells = <1>;
#size-cells = <0>;
#clock-cells = <1>;
compatible = "adi,hmc7044";
reg = <0>;
spi-max-frequency = <1000000>;
jesd204-device;
#jesd204-cells = <2>;
jesd204-sysref-provider;
adi,jesd204-max-sysref-frequency-hz = <2000000>; /* 2 MHz */
adi,pll1-clkin-frequencies = <100000000 100000000 0 0>;
adi,vcxo-frequency = <100000000>;
adi,pll1-loop-bandwidth-hz = <200>;
adi,pll2-output-frequency = <3000000000>;
adi,sysref-timer-divider = <1024>;
adi,pulse-generator-mode = <0>;
adi,clkin0-buffer-mode = <0x07>;
adi,clkin1-buffer-mode = <0x07>;
adi,oscin-buffer-mode = <0x15>;
adi,gpi-controls = <0x00 0x00 0x00 0x00>;
adi,gpo-controls = <0x37 0x33 0x00 0x00>;
clock-output-names =
"hmc7044_out0", "hmc7044_out1", "hmc7044_out2",
"hmc7044_out3", "hmc7044_out4", "hmc7044_out5",
"hmc7044_out6", "hmc7044_out7", "hmc7044_out8",
"hmc7044_out9", "hmc7044_out10", "hmc7044_out11",
"hmc7044_out12", "hmc7044_out13";
hmc7044_c0: channel@0 {
reg = <0>;
adi,extended-name = "CORE_CLK_RX";
adi,divider = <10>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
hmc7044_c2: channel@2 {
reg = <2>;
adi,extended-name = "DEV_REFCLK";
adi,divider = <15>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
hmc7044_c3: channel@3 {
reg = <3>;
adi,extended-name = "DEV_SYSREF";
adi,divider = <2560>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
adi,jesd204-sysref-chan;
};
hmc7044_c6: channel@6 {
reg = <6>;
adi,extended-name = "CORE_CLK_TX";
adi,divider = <10>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
hmc7044_c8: channel@8 {
reg = <8>;
adi,extended-name = "FPGA_REFCLK1";
adi,divider = <10>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
hmc7044_c10: channel@10 {
reg = <10>;
adi,extended-name = "CORE_CLK_RX_ALT";
adi,divider = <10>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
hmc7044_c12: channel@12 {
reg = <12>;
adi,extended-name = "FPGA_REFCLK2";
adi,divider = <10>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
};
//********************
hmc7044_c13: channel@13 {
reg = <13>;
adi,extended-name = "FPGA_SYSREF";
adi,divider = <2560>;
adi,driver-mode = <HMC7044_DRIVER_MODE_LVDS>;
adi,jesd204-sysref-chan;
};
};
};
&fmc_spi {
trx0_ad9081: ad9081@0 {
compatible = "adi,ad9082";
reg = <0>;
spi-max-frequency = <5000000>;
/* Clocks */
clocks = <&hmc7044 2>;
clock-names = "dev_clk";
clock-output-names = "rx_sampl_clk", "tx_sampl_clk";
#clock-cells = <1>;
jesd204-device;
#jesd204-cells = <2>;
jesd204-top-device = <0>; /* This is the TOP device */
jesd204-link-ids = <FRAMER_LINK0_RX DEFRAMER_LINK0_TX>;
jesd204-inputs =
<&axi_ad9081_core_rx 0 FRAMER_LINK0_RX>,
<&axi_ad9081_core_tx 0 DEFRAMER_LINK0_TX>;
adi,tx-dacs {
#size-cells = <0>;
#address-cells = <1>;
adi,dac-frequency-hz = /bits/ 64 <9600000000>;
adi,main-data-paths {
#address-cells = <1>;
#size-cells = <0>;
adi,interpolation = <8>;
ad9081_dac0: dac@0 {
reg = <0>;
adi,crossbar-select = <&ad9081_tx_fddc_chan0>;
adi,nco-frequency-shift-hz = /bits/ 64 <1000000000>; /* 1000 MHz */
};
ad9081_dac1: dac@1 {
reg = <1>;
adi,crossbar-select = <&ad9081_tx_fddc_chan1>;
adi,nco-frequency-shift-hz = /bits/ 64 <1100000000>; /* 1100 MHz */
};
};
adi,channelizer-paths {
#address-cells = <1>;
#size-cells = <0>;
adi,interpolation = <1>;
ad9081_tx_fddc_chan0: channel@0 {
reg = <0>;
adi,gain = <2048>; /* 2048 * 10^(gain_dB/20) */
adi,nco-frequency-shift-hz = /bits/ 64 <0>;
};
ad9081_tx_fddc_chan1: channel@1 {
reg = <1>;
adi,gain = <2048>; /* 2048 * 10^(gain_dB/20) */
adi,nco-frequency-shift-hz = /bits/ 64 <0>;
};
};
adi,jesd-links {
ad9081_tx_jesd_l0: link@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
adi,logical-lane-mapping = /bits/ 8 <0 2 7 6 1 5 4 3>;
adi,link-mode = <17>; /* JESD Quick Configuration Mode */
adi,subclass = <1>; /* JESD SUBCLASS 0,1,2 */
adi,version = <1>; /* JESD VERSION 0=204A,1=204B,2=204C */
adi,dual-link = <0>; /* JESD Dual Link Mode */
adi,converters-per-device = <4>; /* JESD M */
adi,octets-per-frame = <1>; /* JESD F */
adi,frames-per-multiframe = <32>; /* JESD K */
adi,converter-resolution = <16>; /* JESD N */
adi,bits-per-sample = <16>; /* JESD NP' */
adi,control-bits-per-sample = <0>; /* JESD CS */
adi,lanes-per-device = <8>; /* JESD L */
adi,samples-per-converter-per-frame = <1>; /* JESD S */
adi,high-density = <1>; /* JESD HD */
adi,tpl-phase-adjust = <6>;
};
};
};
adi,rx-adcs {
#size-cells = <0>;
#address-cells = <1>;
adi,adc-frequency-hz = /bits/ 64 <4800000000>;
adi,main-data-paths {
#address-cells = <1>;
#size-cells = <0>;
ad9081_adc0: adc@0 {
reg = <0>;
adi,decimation = <4>;
adi,nco-frequency-shift-hz = /bits/ 64 <1000000000>;
adi,nco-mixer-mode = <AD9081_ADC_NCO_VIF>;
//adi,crossbar-select = <&ad9081_rx_fddc_chan0>, <&ad9081_rx_fddc_chan2>; /* Static for now */
};
ad9081_adc1: adc@1 {
reg = <1>;
adi,decimation = <4>;
adi,nco-frequency-shift-hz = /bits/ 64 <(1000000000)>;
adi,nco-mixer-mode = <AD9081_ADC_NCO_VIF>;
//adi,crossbar-select = <&ad9081_rx_fddc_chan1>, <&ad9081_rx_fddc_chan3>; /* Static for now */
};
};
adi,channelizer-paths {
#address-cells = <1>;
#size-cells = <0>;
ad9081_rx_fddc_chan0: channel@0 {
reg = <0>;
adi,decimation = <1>;
adi,gain = <2048>; /* 2048 * 10^(gain_dB/20) */
adi,nco-frequency-shift-hz = /bits/ 64 <0>;
};
ad9081_rx_fddc_chan1: channel@1 {
reg = <1>;
adi,decimation = <1>;
adi,gain = <2048>; /* 2048 * 10^(gain_dB/20) */
adi,nco-frequency-shift-hz = /bits/ 64 <0>;
};
};
adi,jesd-links {
#size-cells = <0>;
#address-cells = <1>;
ad9081_rx_jesd_l0: link@0 {
reg = <0>;
adi,converter-select =
<&ad9081_rx_fddc_chan0 FDDC_I>, <&ad9081_rx_fddc_chan0 FDDC_Q>,
<&ad9081_rx_fddc_chan1 FDDC_I>, <&ad9081_rx_fddc_chan1 FDDC_Q>;
adi,logical-lane-mapping = /bits/ 8 <2 0 7 6 5 4 3 1>;
adi,link-mode = <18>; /* JESD Quick Configuration Mode */
adi,subclass = <1>; /* JESD SUBCLASS 0,1,2 */
adi,version = <1>; /* JESD VERSION 0=204A,1=204B,2=204C */
adi,dual-link = <0>; /* JESD Dual Link Mode */
adi,converters-per-device = <4>; /* JESD M */
adi,octets-per-frame = <1>; /* JESD F */
adi,frames-per-multiframe = <32>; /* JESD K */
adi,converter-resolution = <16>; /* JESD N */
adi,bits-per-sample = <16>; /* JESD NP' */
adi,control-bits-per-sample = <0>; /* JESD CS */
adi,lanes-per-device = <8>; /* JESD L */
adi,samples-per-converter-per-frame = <1>; /* JESD S */
adi,high-density = <1>; /* JESD HD */
};
};
};
};
};Wrapped the devicetree code in a block of code
[edited by: iulia at 8:27 AM (GMT -4) on 27 Jun 2023]
